Video shows at least three park goers strapped into the ride, feet dangling above their heads with their heads precariously close to the ground below.

Kristin Siebeneicher, a spokeswoman for Six Flags, told NJ.com that the riders were safely evacuated from the ride but the coaster had to be shut down for the rest of the day even though it was only open for about an hour. Siebeneicher reiterated that the ride “was running flawlessly nonstop” for the three days prior to the unveiling.”

"It's a new ride and new rides occasionally need to be tweaked," she said.

The Joker is the 14th coaster at the Six Flags Great Adventure park. The ride is still scheduled to open to general public this Saturday, May 28.